Stool



FIG. 1 is a perspective view of the stool embodying the new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a rear elevational view thereof;

FIG. 4 is a left elevational view thereof;

FIG. 5 is a right elevational view thereof;

FIG. 6 is a top plan view thereof; and,

FIG. 7 is a bottom plan view thereof with hidden lines.

FIG. 7 shows features of a support structure in phantom lines. These features are shown for environmental purposes and do not form any part of the claimed design. 

The ornamental design for the stool, as shown and described. 